Monitorix is a free, open source, lightweight system monitoring tool
Full-featured enterprise network management tool
A lightweight monitoring tool
Local domain management tool for developers. Map custom local domains
High capacity syslog data collection, filtering, and management.
lm-sensors repository
Command line tool for managing Amazon S3 and CloudFront services
Connector for misconfigured hosts on LAN.
Software Monitoring Framework
Turn any Windows 7/8 System into a WiFi hotspot
Web based management tool for unixes
Cluster Monitoring tool using gossip mechanisem
Easy to use firewall for linux beginners.
Passive Proxy Daemon sniffs packets and creates squid proxy logs